Denote by $V$ the $\mathbb { Q }$-vector-space $\mathbb { Q } [ X ]$ (polynomial ring in one variable $X$ ). Show that $V ^ { * }$ is not isomorphic to $V$.
Denote by $V$ the $\mathbb { Q }$-vector-space $\mathbb { Q } [ X ]$ (polynomial ring in one variable $X$ ). Show that $V ^ { * }$ is not isomorphic to $V$.